Peace Corps
Before you started teaching, you served in the Peace Corps. While overseas, you were arrested, jailed, charged, and convicted for “subversive activities” not appreciated by the foreign government. It was years ago and you do not report the charge on your application. Were principles violated?

First of all, it would depend on what government you were jailed by.If the government was more along the lines of North Korea, Syria, or any other non democratic government, who would just look for any reason to jail you, I would say it would not matter. It sounds like it can be logically explained to your employer.